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<blockquote data-quote="Fred Kingston_RIP" data-source="post: 178928" data-attributes="member: 10742">Jpeg is a compressed format made small for faster transmission through web sites, and computer storage. It was defined when transmission speeds were slower, and storage systems were more expensive. By its very nature, to achieve that compression, data is discarded...&nbsp; To make things even more confusing (and the format less robust) there are several definitions/levels of compression... The more you compress, the more data gets discarded... It seems only logical, that the first things you start dumping when compressing graphic files, is data that's not related to the screen image itself...You can see that here in how this forum's software strips out the EXIF data in the interests of file storage space reduction...It's of interest to us here because we naturally want to see that data as part of a learning process with photography... On the other hand, it never becomes a topic of discussion on other sites because the images aren't integral to the discussion other than as the message the image conveys...<img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile&nbsp; &nbsp; :)" loading="lazy" data-shortname=":)" /></blockquote>

[QUOTE="Fred Kingston_RIP, post: 178928, member: 10742"] Jpeg is a compressed format made small for faster transmission through web sites, and computer storage. It was defined when transmission speeds were slower, and storage systems were more expensive. By its very nature, to achieve that compression, data is discarded... To make things even more confusing (and the format less robust) there are several definitions/levels of compression... The more you compress, the more data gets discarded... It seems only logical, that the first things you start dumping when compressing graphic files, is data that's not related to the screen image itself... You can see that here in how this forum's software strips out the EXIF data in the interests of file storage space reduction... It's of interest to us here because we naturally want to see that data as part of a learning process with photography... On the other hand, it never becomes a topic of discussion on other sites because the images aren't integral to the discussion other than as the message the image conveys...:) [/QUOTE]

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